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Korvikt [17]
3 years ago
14

Is (1, 4) a solution to this system of equations? 3x + y = 7

Mathematics
1 answer:
inysia [295]3 years ago
8 0
B. Yes, (1,4) is a solution
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Basic Computation: Finding Probabilities, let z be a random variable with a standard normal distribution. Find the indicated pro
svp [43]

Answer:

0.8808

Step-by-step explanation:

The objective is to calculate the probability of:

P(-1.20 ≤ z ≤ 2.64)

i.e. the probability that is the area between two z-values.

Thus;

P(-1.20 ≤ z ≤ 2.64) = P(z ≤ 2.64) - P( z ≤ 1.20)

From z table;

P(-1.20 ≤ z ≤ 2.64) = 0.9959 - 0.1151

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We can see the shaded area under the standard normal curve from the image attached below.

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3 years ago
The ratio of boys to girls is 3 to 2 if there are 12 boys, how many girls are there
Anon25 [30]

Answer:

8

Step-by-step explanation:

The ratio is 3/2 boys/girls

if we call the expression as x there would be a total of 5x girls and boys

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3 years ago
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Jermaine wants to know how fast he is traveling in a school bus, but he cannot see the speedometer. He records that the bus trav
Advocard [28]
<h3>Answer:</h3>

48 mph

<h3>Explanation:</h3>

The rate in miles per second can be converted to the rate in miles per hour by multiplying by the number of seconds in an hour:

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8 0
3 years ago
The length of a rectangle is three more than twice its width the perimeter of a rectangle is 42 cm what is the length of the rec
Maurinko [17]

Answer:

The length of the rectangle is 15 cm.

Step-by-step explanation:

breadth(b)=?

length(l)= 3+2b

perimeter(P)= 42 cm

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or, 42 = 2 ( 3+3b)

or, \frac{42}{2} = 3+3b

or, 21 = 3+3b

or, 21-3 =3b

or, 18 = 3b

or, \frac{18}{3} = b

or, 6 = b

Here, Breadth(b)= 6 cm

Length (l) = 3 + 2*6

              = 3 + 12

              =15 cm

5 0
3 years ago
The Parkview middle school football team will be playing in the state championship the cochairs free tickets that he would be di
ser-zykov [4K]

Answer: 156

Step-by-step explanation: 52*3=156 tickets

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3 years ago
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